Window construction



Aug. 6, 1929. H, E; BQTHE 1,723,326

WINDOW CONSTRUCTION Filed D60. 14, 1927 l l l l l l @afby INVENTOR Miam ATToNEY Y y1,723,326 PATENT OFFICE.

HUGO E. BOTHE, OF CHICAGO, ILLINOIS.

WINDOW CONSTRUCTION.

Application filed December 14, 1927. Serial No. 239,983.

This invention relates to certain novel iinprovements in window constructions and has' for its principal object the provision of an improved construction of this character which will be highly efficient in use and economical in manufacture.

' In window constructions embodying the well known sliding sashes, there is provided in the side jambs of the window, Weight boxes within which operate weights connected to the sashes by means of cords for holding the window sashes in an open position. By embodying these weight boxes in a window construction considerable space is consumed and it is therefore one of the many objects of this 4invention to provide a simple arrangement of parts for holding the window sashes in open position and which when incorporated in a window construction will dispense with the ordinary weight boXes.

Other objects will appear hereinafter.

The invention consists in the novel combination and arrangement of parts to be hereinafter described and claimed.

The invention will be best understood by reference to the accompanying drawings, showing the preferred form of construction and in which: f

Fig. l is an elevational view of a window construction showing my invention associated therewith;

Fig. 2 is a sectional detail view taken substantially on line 2-2 of Fig. 1;

Fig. 3 is a sectional detail view taken substantially on line 8 8 of Fig. 2;

Fig. 4C is a fragmentary elevational view of a spring member embodied in the invention; and

Fig. 5 is a fragmentary sectional detail view j of a pulley construction embodied in the invention.

In the drawing I have shown a window construction of the double window type but in the description to follow reference will be solely made to one of the Window sashes in connection with the construction for it is to be understood that the construction throughout is similar. In this connection 10 indicates a window sash of the slidable type. This window sash is slidably associated with the side j ambs 11 of the window construction 12 which includes a sill 13 and head 14. The side jambs 11 provide guiding strips 15 for the window sash and these jambs are preferably hollow in construction and of suiicient depth for the housing and passage of the cords 16 which have their lower end portions connected to the sash rails 17 of the window sash by suitable securing elements 18. These cords may b e of any well known material such as metallic chains or the like. The opposite end portion of the cords are secured as at 19 to pulleys 20 mounted for rotation upon shafts 21 confined in an enclosure 22 provided by the head of the window construction. Formed thereon are 'the end portions of connecting cords 24 which likewise may be of any ap@v proved material such as chains or the like. The adjacent end portions 25 of these cords 24 are connected tothe end portions 26 of springs 27. These springs 27 are in the present instance shown in the form of tightly Wound coil springs but it is obvious that any well known type spring of the character may be employed.

As stated, the pulleys 20 and 23 are integrally joined together for runiform rotation and in this connection itv will be seen that each of the pulleys are formed substantially frusto-conical in shape with their largest areas in abutting relation and with their surfaces y grooved to assure proper winding of the cords and to bring about neutralization between the tension of the spring and the sash as the sash is moved in various open positions with respect to the opening of the window contruction.

The operation is as follows. When the window sash is in closed position, the springs 27 will be placed under tension and the tension of the springs under these conditions is neutralized with the weight of the window sash so that the s rings will not tend to move the sash `upward y and whereby the springs will be of sufficient tension so as to impart rotation to the pulleys 20 to wind the cord 16 thereabout as the window sash is raised. The springs will function to retain the window sash in any desired open position.

It will be manifest from the description set forth that to incorporate my improved invention in a window construction a minimum space is required for the confinement of the same and that the same will be positive in its function for retaining the window sash in the desired open position.

While I have illustrated and described the preferred form of construction for carrying my invention into effect, this is capable of variation and modification, Without departing from the spirit of the invention. l, 'thereore, do not Wish to be limited to the precise details of construction set forth7 but desire to avail myself of such variations and inedifications as come Within the scope of the appended claims.

Having thus described my invention What I claim as new and desire to protect by Letters Patent is:

l. In a Window construction including a movable sash7 pulley structures arranged in f pairs with the pulley of one pair formed as an integral part of the pulley of said other pair? connecting means between one pair or" said pulleys and the sash, a yieldable member confined in the head of the Window construction7 A,means connecting said yieldable member to the other pair of said pulley structures7 said pulleys of each pair being 'formed substair tiall rusto-conlcal and havinO' Grooves formed in their surfaces for receivingl the said connecting means.

2. in a Window construction including a movable sash a pair of pulleys formed integral ywith each other and being substantially truste-conical with the largest areas arranged in abutting relationJ a cord connectingI one of said pulleys to the sash and adapted to be Wound upon said pulley, an expansion spring, a cord connecting said expansion spring to the other of the pulleys and adapted to he Wound onsaid other pulley, said expansion spring -functioning` to rotate said pulley to Wind said first mentioned cord on said one of the pulleys While the second inentioned cord is being unwound from the other of the pulleys during lowering` movement of said sash,

n testimony whereof I aiX my signature.

HUGO E. BOTHE. 

